Electrical connector.



P. T. SNYDER.

ELECTRICAL CONNECTOR.

APPLICATION FILED AUG. 14. mm.

1,955 ,943. Patented Feb. 12, 1918 PABKE'T. SITYDEE, OF CHICAGO,

I'LLZNOIS, ASSIGNOR F ONE-HALF TO R C-3S \T. IBEATTY,

OF CHICAGO, ILLINOIS.

ELECTRICAL CCNNEfiTOR.

Specification 01' Letters 392mm.

. Pat-enied Feb. 12, 1593i:

Appliaaflon flied August 14., 1916. Eerie Efo. 12 1.880.

.To all whom it may concern:

Be 1t known that I, PARKE T. SNYDER, a citizen of the Umteci States, resldmg at Ghiczi o in the count of Cook and State 1 y y 5 of 111111015, have, invented ceriam' new arui useful Improvements 1n Electrical Connectors ,'-of which the follow ng is e specificatlon. I i Myx1iwention relates to imgrovements n electrical connectors ansi more partzculariy to a socket for receivmg either a singie o1 7 L double contact Edi-Swan plug or nose.

One of the ob ec t s of my invention 1s to rov de an electrical socket arranged for use 111 either a single or doublewlre system and adapted-to cooperate Wiih either a single or double contact base irrespectwe oftne chap actor of system n'whlch it 18 connected.

I Another ObJGCI of the inventlon 1s in pro- 4 20 vide such. a socket pm'ticulariy adapted-for automobile fighting circuits, 2 s ngle stock type of see-1:61; serving for use in whichever system is er'n loyed'by the car manufacturer and permitting the use of either single or double contact on either wiring system.

A furiher' objectofthe invention is the provision of a. sturdy, 'reliabie, and efl'icient socket wh'iehmny be manufactured at. a iow cost.

vention'will become apparent to those skilled in the aft from a consideration of toe fol-:

lowing specification and aimwing: wherein; Figure-1 is 1 diameirini Sectional View -through-.:: connector embodying inven tiomv i i 5 is an end elevation of the same.

Fig 3 is a tralfisve rsesectional View on the 1i1ie3-3 of Fig.1; 1 40.v Fig.4 ism;- Side elevation ef-the bociy purt of the connectcm removed-from its shell.

Fig. #1 is 21' dinmetricnl sectional i-ew throljgh. S1 modified fem-n. of socket. embodyin my invention. -1.i a '7 is a. transverse sectional view on the hl'iE T -"T-Of Figz- 6, and;

Fig. 8' is ,a transverse'sectionel' view on.

' theline8-8of 6. e

Referring to the drawings, 1 nave Him-: firbmted in Figs. 1. to 5 inclusive, e oonneccoa' forjoiningtwo plugs, or a. plug and 35mm; base, wherea, if: Figs. 6 to 3 Ti have mue- 5'5 trabed e niodificationin the form oi seeket Still other we further objects of my in."

a section. on. the line 5-5 0f with means for attachment of wire termirule, the soket; being adapted to receive either a connector plug or lamp base. In both types of apparatus the connector is adapted for use in either a single '01." a two wire system and for cooperation, irre spective of Lhe system in which it is connected. ivith either a 'sirigi e or doubie contest plug or iump base.

enern evice commi 1.111% a? me. 5.1211 10 him \ihicii flexiiormi cozmoot-carryb cyiinciei" or body part ii 0'; suit-aide ins'nlm manefl'ai; such as "beix bakeliie or fih'e in; Referring pa rii-iruiari'g' to modification shown iniige. to E3 inciusive i have shown a conneeioi' in which the tubular eheil 10 is open at oqi in siteand slotted as at 12 to receive the extending locking pins of an Edi-SW3?! plug. The body part or inslflating block 21 is of a diameter sufiicieni. to make a tight fit within the sneli 10, so that after the emita cic parts are assembled in. the biock it is pressed into -aositioi'i in the i1 10, there being snifcient frictional ance tohold it implace. Two cylindrica nnings. 13 and 1% extend through the insuimiing lilo ck on lines 3211::- nliei with its um! positional, as i us- Lreted in 3 in ihe same :dianiei Heal plane at approiiirzzateiy equal distances from the axis of the eye-index Within these openings are posiii-oned a pair of ielescop ing, resiliently extended,' tubular contact. members .ii. and E.

The Contact member A eoi ipiises n fubw lav member 15, the upper end 16 oz. which is dosed. its lower em]. telescoping over the open em. of a simiiar tubular memher 15 the lower em? .1? of which is cine-ed 5nd serves as a content for the lower socket, coiled spring lfits within time two 'miesco i'ng tubes and serveaio resiliently hoki t 9 contacts in-iiheir outermost position- A reetangular siot 19 extends from each end oi the eyiiiidrical plug. between its periphery am} the hole 13 inwerc'ily'at an an il: to in tereect the tubular npeniia, 13 'a out one quarferor its Length. from use ends with iv. these slots are meitionefi thin metallic uis of which i the action of thecoiled spring 18 causes the leaf spring'to' which it is-connected to be drawn into the slot in the insulating block and out oi. contact with the metal shell 10."

In assembling the contact member A the tubular member 15 is first inserted from the into the opening 13 in the block upper end I p inwardly until its leaf spring 20 and pressed snaps into the lower end of slot 19 after which it is moved in the reverse direction untll 1t assumes the position shown 1n Fig.

1. I The coil spring18 is then inserted from the opposite end of the opening 13 and the tubular contact 15' pressed inwardly until its leaf spring slips into theinneh end of fits corresponding slot 1 9, whereuponthe 'coiled spring 18 will force it outwardl into vthe position shown in Fig. 1. With suci an arrangement it is obviousthat either end 16' outer ends 23, 24:, flattened over at one/side,

' so as to overlies; the central axial portion of the insulatnr A coiled spring 25 ispositioned within the telescopingtubular members to resiliently vfreeing the lower hold them in their outermost position. The I I 11 ..6f 2l-and22' are slotted as at as and 27 at the sidediametrically opposite the bent over-end portions 23 and 24:, to receive a screw'thread-v inner end portions of the tubular members ed pin.2.8:whic'h extends radially inwardly through an opening- 29 in the block to serveas a stop toprevent outward movement of the two tubular members beyond the position shown in Fig. 1.

With such an apparatus either end of the socket is adapted to receive either a single or double contact plug or lamp base and make proper electrical connection. For ex ample, if a single contact lamp is inserted in the upper end of the socket, its "centrally positioned contact will engage with the overturned end 23 of contact meinber B and depress the same without affecting contact A which is {in electrical connection with the side of the shell 10 and therefore in contact with the return circuit of the lamp through themetal wall of its base; If a double contact plugis inserted in the lower end of the connector thetwocontacts of the plug will engage with the two contacts 17 and 24; respectively, pressing both of them inwardly eaf springQO from contact with the wall '10.

and similarly a single wire system may be 16. If, however,

block, as'illustrated in Fig. 2.-

p'ii'sitione'd the lamp base or plug contacting Thus a two wire system 18 made to feed a single contact lamp,

lamp base or plug the central contact is raised above the end of the base upon a frusto-conical insulator from the bottom of which radiates a metallic ring merging at its periphery into the metallic side wall of the base. The insulator in the standard base extends to points so close to the periphery of the ring that when such a louse is inserted in the socket illustrated it will be evident that thc'insulator will on age near its bottom portion with the Soo et contact 16 or the lamp base is built so that the insulator for the center contact is small enough not to overlie the socket contacts 1 6 or 16 the' side shell contacting springs 20 or 20 will not be necessary. In my copendin application for electrical connectors filed ecember 14th, 1916, and Serial No. 136,983 which, in sofar as it relates to certain features of the subject matter disclosed in Figs. 6, 7 and 8 of the drawings of this application is a continuation of the present application, I have disclosed and claimed an improved socket with the contacts so arranged that when used with the standard bases the connecting spring 20 or 20 is not necessary.

In Figs. 6, 7, and 8 I have shown a modification of the invention in which a lamp socket is provided with wire clamping ter- Initials suitable for connection in either a single/or double wire system. In the metal shell/l0 is inserted a cylindrical body part insulating material, within which are terminals 0 and D The lower end of the body part 11' extends slightly beyond the A lower end of the tubular shell 10,'wh ereas its upperend' is positioned within-the shell 10 to provide a socket with the usual slot openings 12 for receiving an Edi-Swan lamp base or plug.

The contact member C comprises a tubular insert 15 having asolid head 17 at its lower end, its upper end being open to receiving telescoping-tubular contact member 15". the upper end 16 of which is closed to serve as a contact. The lower open end of the tubular member 15." is Hanged outwardly I and after it is inserted in position with its 115 coiled spring 18 the upper end 16 of tube 15.

.is flanged inwardly and the wall of tube 15 is dented in as at 40 to prevent its displace inent. A leaf spring 20' is soldered to the tubular member la -near its upper end and in the head 17' at thelower end of the tube lea.

menses provided in the insulating block 11' to receive a Wire 32 which may be clamped in position by the obliquely extending screw 33 which is so arranged that when a wire is in the opening 30. in the head the screw clamps the same in ,place, but if no Wire projects into the opening thescrcw is of 'sufficient length to project entirely throfigl;

the head 17 and into engagement with the shell 10 at the opposite side of the contact 0}; 1tlhus grounding. the termL is-l C to the s e 1 The other contact D is formed simihu'ly of a tubular member 22'. having a head 24 at its lower cnd,'its upper end being open to receive; the: telescoping tubular member 21 the uppey end of- Which is flattened over as at 23 to o'vei'lie the inner end of the plug 11- ss. inthe heretofore described connector. The coiled spt'ing 25 is positioned within the tubular 'ieawoping members and 22", a slot 26 rovideol in the tubular memi near its inner end for engagen'iel'lt by the threaded pin 23 which extends into the body cf-the' connec'tor' to serve us it limiting stop man-iteheretcfore described exnbodiment. ihe lower. endor head of the tube--22 is-sxially bored as at 3% to receive the end of 1-1- oonuecting Wire which is securely held incon tact with the who by means of an obliquely extending screw 36 -Wl1ll1 takes through from the perjqzhery of the'plug' 1]- into the head By this iirrsngenlent eithera single or double wlre system may he used for connec- -tion With-asingle or double contact lamp, For example, if'we'cohsider I the two wire system is employed cs'illustrstsd in Fig. 6 it is oh us that it a single len o is inserted the open end of the plug its center contact will engage with the con. tact 23, whereas its peripheral metal scrim-co will engage the shell=.-1G and return to wire 39. through the spring 26" and tube 15. ".lhe

insertion '02. a 'tivo-contficJ-lemp will cause.

ressionof both. e nine C and D staring from-its ground thcoogh the ssell'hnd leading the current fret-n both nta c-l's es and directlytot u )S to t-he lump. If s single-wile sv'etei .-be employed the Wire is led into ter- "e other terto make minal D-anrl the screw 35 for cum-1 1s runthrongh the head 17' grounded Contact with so" an arrangement its s inserted in the socket course, malc econ'n at on w 23 and thence to e ripheral contact surface wi'l i.

1'07 and from thence to 1; 0 old. It at two "contact lamp is inserted it the socket both contacts C and D will be depressed. contact I] carrying current through to sure 35, the other lamp contact making engages ing from the spirit and scope ofthe append ed claims.

What I claim is 1. An electrical connector for cooperation with either a single or double contact plug and comprising a metallic shell, an insulating body therein, a pair of resiliently exfellClfld contacts carried thereby, one contact over-lying the-axis of the shell and projects ing to one side thereof, the-other contact positioned at one side of the axis, and a conductor carried by one of the contacts for engagement with the shell only when the last mentioned contact is in extended position.

2. An electrical connector for coperation with either a single or double contact plug and comprising a metallic shell, an insulat ing body therein, a pair of'resiliently ere tended contacts carried by the body part, one contact over-lying the axis of the'body pm and projecting to one side thereof, the other contact positioned at one side of the axis, a. conductor carr ed by one' of thecontocts'for engagement with the shell when the contact is in extended position, and means to move. the conductor out from engagement with'tneshell when its Contact is depressed. 1

3. An electrical connector for cooperation with either a single or a double contact plug,- oomprising a shell, an insulating body part therein, pair of resiliently extended-00m teats carried by the body part, means for electrically connecting one of the contacts with the shell when the contact is in extended position, and means for breaking the electricsl connection when the lust mentioned cont-set is depressed,

An electrical connector for cooperation with either a single or a double contact plug,

commising s-shell, an insulation bodv port within the shell. 21 hairof'resiliently.extend ed contests carried. by the body part, a carried coo-of the contacts for en .crneot 'Withthe s ell, and means one'z'nii the last mentioned contact for moving ssidspring from engagen'mnt with the-she. 1

5. 1%.. socket con'ipz'ising :1 shell, an insulating nody part therein, a pair of-resili'eixtly cts carried by the body part, member on cd by one of the contacts and. adapted nominally to make electrical connectie with the and means for breathing said electrical cation when the last more tionod cont-set 1s dept.

6. A comprisifl body 1' extended contacts carried by the body part,

s shell, on insulattherein, a pair of resiliently single or a double contact plugand compris- -ing a peripheral contact, a contact forengagement with either the single contact of a single contact plug or one of the contacts of a double contact plug, a, contact for engage ment with the other contact of a double contact plug, means for electrically connecting the lastmentioned contact with the first mentioned contact'when a sin le contact plug is inserted in the socket, an means for breaking said'electrical connection when a double contact plug is' inserted in the socket.

8. A socket for cotiperation with either a single contact ordouble contact plug and comprising a metallic shell, a body part of insulating material therein having two longitudinally extending openings therein on opposite sides of the axis, a resiliently extended tubular contacthaving an end portion overlying the axis of the body part in one of the openings, a resiliently extended tubular Contact in the other opening; a leaf spring carried by the last said contact extending angularly therefrom for engagement with the shell, and an abutment on the body part for engagement with the spring when-its contact is depressed to cam the spring-away from the shell.

9. A socket for cooperation with" either a single contactor double contact plug and comprising a metallic shell, a body'part of insulating material therein havin two longitudinally extending openings t erein on opposite sides of the axis, a resiliently ex tended tubular contact having an end portion overlying the axis of the bodypart in one of the openings, a resiliently extended tubular contact in the other opening, said body part having an angularlydisposed slot extending from one ofthe openings outwardly away from the axis and a conductor positioned in said slot with its outer end adapted to make contact with the shell when w the adjacentcontact is in extended position,

its inner end being secured to the adjacent contact. 7

10. Anelectrical connector comprising a metallic shell,- a body part of insulating material positioned therein intermediate its ends to provide a plug receiving socket at each end','-said--body part-having two longitudinally extending openings through the body part one at eachside of-the axis, a pair 7 of telescoping metallic tubes in eacn open mg, a spring withineach pair of tubes adapted toresiliently extend the same,

means for limiting the longitudinal movement of the tubes, the ends of each tube'oi one pair being turned at right angles and the shellwhenits corresponding tube is depressed.

11. electrical connector comprising a metallic shell, a body part of insulating ma terial positioned therein intermediate its ends to provide a plug receiving socket at each end, said body part having two longitudinally extending openings through' the body part, one at eaclrside of the axis, a pair.

of telescoping metallic tubes in" each open-. in g, springs adapted to resiliently extend the same, the ends of each tube-of one pair being turned at right angles to overlie the axis of the shell at each end of the body part, an angularly disposed slot extending from near each end of the opening in which the other tubes are located-outwardly from the axis and a leaf spring in each said slot adapted to make contact at its outer end with the shell when its corresponding tubevis in extended position the inner end of each spring being secured to its corresponding tube.

12. An electrical connector for coiiperation with either a single or double contact' plug and comprising a metallic'shell, an insulating body tlierein,vand a pair of indeshell and projecting to one side thereof, the

other contact positioned at one side of the axis, and a conductorcarried by one of the contacts and adapted to be moved into en} gagement with the shell,

In testimony whereof nesses.

- PARKE T; SNYDER. In the presence of 4 STANLEY W. Coon, MARY F. ALLEN.

I hereunto set my hand in the presence of two subscribing wit- 

